It is true that the energy for the water cycle comes from the Sun.
Explanation:
The heat energy of the sun is the main energy source for the water cycle to take place. The heat energy of the sun heats the surface water leading to its evaporation.
The water vapors enter the atmosphere where they are cooled down and fall back on the earth in the form of rainfall. This rain water gets back into the lakes, oceans and other water reservoirs and is again acted upon by the rays of the sun. This results in a continuous water cycle to take place.
